Which pieces of evidence would be considered relevant primary sources for an informative essay on the Cuban Missile Crisis, one of the major events of the Cold War? Choose two correct answers.

Primary sources are original records or evidence created during the event or by people who directly witnessed it. The president’s speech transcript (B) is a direct record of what he told the public, and a photograph of the missile sites (C) is visual evidence from the crisis. The article, timeline, and textbook excerpt are accounts that interpret or summarize events, so they are secondary sources.

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